html,
body {
    height: 100%;
}

body {
    display: flex;
    align-items: center;
    padding-top: 40px;
    padding-bottom: 40px;
    background-repeat: no-repeat;
    background-image: url("https://ts1.cn.mm.bing.net/th/id/R-C.d7301dc6eca617054eaf858669d27ac6?rik=FQTZ8NNaz9hOMA&pid=ImgRaw&r=0");
    background-size: 100% 100%;
    background-attachment: fixed;
}

.form-signin {
    width: 1000px;
    max-width: 330px;
    padding: 15px;
    margin: auto;
}

.form-signin .checkbox {
    font-weight: 400;
}

.form-signin .form-floating:focus-within {
    z-index: 2;
}

.form-signin input[type="email"] {
    margin-bottom: -1px;
    border-bottom-right-radius: 0;
    border-bottom-left-radius: 0;
}

.form-signin input[type="password"] {
    margin-bottom: 10px;
    border-top-left-radius: 0;
    border-top-right-radius: 0;
}

